The principle is as in the basic Fallout
If the letters in the selected word are in the same place as in the encrypted one, then this is displayed numerically.
Example 1 :
The word SLUT is chosen, and the riddle is STOK
One letter is in its place, it will be displayed as 1/4 correct
Example 2:
The word STIK is chosen, and the riddle is STOK
Three letters are in their place, it will be displayed as 3/4 correct